1 ;;; nndoc.el --- single file access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
27 ;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
37 (eval-when-compile (require 'cl))
41 (defvoo nndoc-article-type 'guess
43 One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
44 `rfc934', `rfc822-forward', `mime-parts', `standard-digest',
45 `slack-digest', `clari-briefs', `nsmail', `outlook', `oe-dbx',
46 `mailman', `exim-bounce', or `guess'.")
48 (defvoo nndoc-post-type 'mail
49 "*Whether the nndoc group is `mail' or `post'.")
51 (defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
52 "Hook run after opening a document.
53 The default function removes all trailing carriage returns
56 (defvar nndoc-type-alist
58 (article-begin . "^\^A\^A\^A\^A\n")
59 (body-end . "^\^A\^A\^A\^A\n"))
62 (head-begin . "^ ?\n")
66 (subtype digest guess))
68 (generate-head-function . nndoc-generate-mime-parts-head)
69 (article-transform-function . nndoc-transform-mime-parts))
71 (article-begin . "^From - "))
73 (article-begin . "^Path:"))
75 (article-begin . "^#! *rnews +\\([0-9]+\\) *\n")
76 (body-end-function . nndoc-rnews-body-end))
78 (article-begin-function . nndoc-mbox-article-begin)
79 (body-end-function . nndoc-mbox-body-end))
81 (article-begin . "\^_\^L *\n")
83 (body-begin-function . nndoc-babyl-body-begin)
84 (head-begin-function . nndoc-babyl-head-begin))
86 (article-begin . "^------ This is a copy of the message, including all the headers. ------\n\n")
87 (body-end-function . nndoc-exim-bounce-body-end-function))
89 (article-begin . "^--.*\n+")
91 (prepare-body-function . nndoc-unquote-dashes))
93 (article-begin . "^--__--__--\n\nMessage:")
94 (body-end . "^--__--__--$")
95 (prepare-body-function . nndoc-unquote-dashes))
97 (article-begin . "^ \\*")
98 (body-end . "^\t------*[ \t]^*\n^ \\*")
101 (generate-head-function . nndoc-generate-clari-briefs-head)
102 (article-transform-function . nndoc-transform-clari-briefs))
105 (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
106 (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
107 (prepare-body-function . nndoc-unquote-dashes)
108 (body-end-function . nndoc-digest-body-end)
110 (body-begin . "^ *\n")
111 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
112 (subtype digest guess))
114 (article-begin . "^------------------------------*[\n \t]+")
116 (body-end-function . nndoc-digest-body-end)
117 (body-begin . "^ ?$")
118 (file-end . "^End of")
119 (prepare-body-function . nndoc-unquote-dashes)
120 (subtype digest guess))
122 (pre-dissection-function . nndoc-decode-content-transfer-encoding)
123 (article-begin . "^== [0-9]+ of [0-9]+ ==$")
124 (head-begin . "^Date:")
126 (body-end-function . nndoc-digest-body-end)
128 (file-end . "^==============================================================================$")
129 (prepare-body-function . nndoc-unquote-dashes)
130 (subtype digest guess))
132 (article-begin . "^\\\\\\\\\n")
133 (head-begin . "^\\(Paper.*:\\|arXiv:\\)")
134 (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
136 (body-end . "\\(-------------------------------------------------\\|%-%-%-%-%-%-%-%-%-%-%-%-%-%-\\|%%--%%--%%--%%--%%--%%--%%--%%--\\|%%%---%%%---%%%---%%%---\\)")
137 (file-end . "\\(^Title: Recent Seminal\\|%%%---%%%---%%%---%%%---\\)")
138 (generate-head-function . nndoc-generate-lanl-gov-head)
139 (article-transform-function . nndoc-transform-lanl-gov-announce)
140 (subtype preprints guess))
142 (article-begin . "^\n+")
143 (body-end-function . nndoc-rfc822-forward-body-end-function)
144 (generate-head-function . nndoc-rfc822-forward-generate-head)
145 (generate-article-function . nndoc-rfc822-forward-generate-article))
147 (article-begin-function . nndoc-outlook-article-begin)
149 (oe-dbx ;; Outlook Express DBX format
150 (dissection-function . nndoc-oe-dbx-dissection)
151 (generate-head-function . nndoc-oe-dbx-generate-head)
152 (generate-article-function . nndoc-oe-dbx-generate-article))
154 (article-begin . "^-+ \\(Start of \\)?forwarded message.*\n+")
155 (body-end . "^-+ End \\(of \\)?forwarded message.*$")
156 (prepare-body-function . nndoc-unquote-dashes))
157 (mail-in-mail ;; Wild guess on mailer daemon's messages or others
158 (article-begin-function . nndoc-mail-in-mail-article-begin))
169 (defvar nndoc-binary-file-names ".[Dd][Bb][Xx]$"
170 "Regexp for binary nndoc file names.")
173 (defvoo nndoc-file-begin nil)
174 (defvoo nndoc-first-article nil)
175 (defvoo nndoc-article-begin nil)
176 (defvoo nndoc-head-begin nil)
177 (defvoo nndoc-head-end nil)
178 (defvoo nndoc-file-end nil)
179 (defvoo nndoc-body-begin nil)
180 (defvoo nndoc-body-end-function nil)
181 (defvoo nndoc-body-begin-function nil)
182 (defvoo nndoc-head-begin-function nil)
183 (defvoo nndoc-body-end nil)
184 ;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
185 ;; following items. ARTICLE acts as the association key and is an ordinal
186 ;; starting at 1. HEAD-BEGIN [0], HEAD-END [1], BODY-BEGIN [2] and BODY-END
187 ;; [3] are positions in the `nndoc' buffer. LINE-COUNT [4] is a count of
188 ;; lines in the body. For MIME dissections only, ARTICLE-INSERT [5] and
189 ;; SUMMARY-INSERT [6] give headers to insert for full article or summary line
190 ;; generation, respectively. Other headers usually follow directly from the
191 ;; buffer. Value `nil' means no insert.
192 (defvoo nndoc-dissection-alist nil)
193 (defvoo nndoc-prepare-body-function nil)
194 (defvoo nndoc-generate-head-function nil)
195 (defvoo nndoc-article-transform-function nil)
196 (defvoo nndoc-article-begin-function nil)
197 (defvoo nndoc-generate-article-function nil)
198 (defvoo nndoc-dissection-function nil)
199 (defvoo nndoc-pre-dissection-function nil)
201 (defvoo nndoc-status-string "")
202 (defvoo nndoc-group-alist nil)
203 (defvoo nndoc-current-buffer nil
204 "Current nndoc news buffer.")
205 (defvoo nndoc-address nil)
207 (defconst nndoc-version "nndoc 1.0"
212 ;;; Interface functions
214 (nnoo-define-basics nndoc)
216 (deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
217 (when (nndoc-possibly-change-buffer newsgroup server)
219 (set-buffer nntp-server-buffer)
222 (if (stringp (car articles))
225 (when (setq entry (cdr (assq (setq article (pop articles))
226 nndoc-dissection-alist)))
227 (insert (format "221 %d Article retrieved.\n" article))
228 (if nndoc-generate-head-function
229 (funcall nndoc-generate-head-function article)
230 (insert-buffer-substring
231 nndoc-current-buffer (car entry) (nth 1 entry)))
232 (goto-char (point-max))
233 (unless (eq (char-after (1- (point))) ?\n)
235 (insert (format "Lines: %d\n" (nth 4 entry)))
238 (nnheader-fold-continuation-lines)
241 (deffoo nndoc-request-article (article &optional newsgroup server buffer)
242 (nndoc-possibly-change-buffer newsgroup server)
244 (let ((buffer (or buffer nntp-server-buffer))
245 (entry (cdr (assq article nndoc-dissection-alist)))
251 ((stringp article) nil)
252 (nndoc-generate-article-function
253 (funcall nndoc-generate-article-function article))
255 (insert-buffer-substring
256 nndoc-current-buffer (car entry) (nth 1 entry))
259 (insert-buffer-substring
260 nndoc-current-buffer (nth 2 entry) (nth 3 entry))
262 (when nndoc-prepare-body-function
263 (funcall nndoc-prepare-body-function))
264 (when nndoc-article-transform-function
265 (funcall nndoc-article-transform-function article))
268 (deffoo nndoc-request-group (group &optional server dont-check)
272 ((not (nndoc-possibly-change-buffer group server))
273 (nnheader-report 'nndoc "No such file or buffer: %s"
276 (nnheader-report 'nndoc "Selected group %s" group)
278 ((zerop (setq number (length nndoc-dissection-alist)))
279 (nndoc-close-group group)
280 (nnheader-report 'nndoc "No articles in group %s" group))
282 (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
284 (deffoo nndoc-request-type (group &optional article)
285 (cond ((not article) 'unknown)
286 (nndoc-post-type nndoc-post-type)
289 (deffoo nndoc-close-group (group &optional server)
290 (nndoc-possibly-change-buffer group server)
291 (and nndoc-current-buffer
292 (buffer-name nndoc-current-buffer)
293 (kill-buffer nndoc-current-buffer))
294 (setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
296 (setq nndoc-current-buffer nil)
297 (nnoo-close-server 'nndoc server)
298 (setq nndoc-dissection-alist nil)
301 (deffoo nndoc-request-list (&optional server)
304 (deffoo nndoc-request-newgroups (date &optional server)
307 (deffoo nndoc-request-list-newsgroups (&optional server)
311 ;;; Internal functions.
313 (defun nndoc-possibly-change-buffer (group source)
316 ;; The current buffer is this group's buffer.
317 ((and nndoc-current-buffer
318 (buffer-name nndoc-current-buffer)
319 (eq nndoc-current-buffer
320 (setq buf (cdr (assoc group nndoc-group-alist))))))
321 ;; We change buffers by taking an old from the group alist.
322 ;; `source' is either a string (a file name) or a buffer object.
324 (setq nndoc-current-buffer buf))
325 ;; It's a totally new group.
326 ((or (and (bufferp nndoc-address)
327 (buffer-name nndoc-address))
328 (and (stringp nndoc-address)
329 (file-exists-p nndoc-address)
330 (not (file-directory-p nndoc-address))))
331 (push (cons group (setq nndoc-current-buffer
333 (concat " *nndoc " group "*"))))
335 (setq nndoc-dissection-alist nil)
337 (set-buffer nndoc-current-buffer)
339 (if (and (stringp nndoc-address)
340 (string-match nndoc-binary-file-names nndoc-address))
341 (let ((coding-system-for-read 'binary))
342 (mm-insert-file-contents nndoc-address))
343 (if (stringp nndoc-address)
344 (nnheader-insert-file-contents nndoc-address)
345 (insert-buffer-substring nndoc-address))
346 (run-hooks 'nndoc-open-document-hook)))))
347 ;; Initialize the nndoc structures according to this new document.
348 (when (and nndoc-current-buffer
349 (not nndoc-dissection-alist))
351 (set-buffer nndoc-current-buffer)
353 (if (eq nndoc-article-type 'mime-parts)
354 (nndoc-dissect-mime-parts)
355 (nndoc-dissect-buffer))))
356 (unless nndoc-current-buffer
357 (nndoc-close-server))
358 ;; Return whether we managed to select a file.
359 nndoc-current-buffer))
362 ;;; Deciding what document type we have
365 (defun nndoc-set-delims ()
366 "Set the nndoc delimiter variables according to the type of the document."
367 (let ((vars '(nndoc-file-begin
369 nndoc-article-begin-function
370 nndoc-head-begin nndoc-head-end
371 nndoc-file-end nndoc-article-begin
372 nndoc-body-begin nndoc-body-end-function nndoc-body-end
373 nndoc-prepare-body-function nndoc-article-transform-function
374 nndoc-generate-head-function nndoc-body-begin-function
375 nndoc-head-begin-function
376 nndoc-generate-article-function
377 nndoc-dissection-function
378 nndoc-pre-dissection-function)))
380 (set (pop vars) nil)))
382 ;; Guess away until we find the real file type.
383 (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
385 (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
386 ;; Set the nndoc variables.
388 (set (intern (format "nndoc-%s" (caar defs)))
391 (defun nndoc-guess-type (subtype)
392 (let ((alist nndoc-type-alist)
393 results result entry)
394 (while (and (not result)
395 (setq entry (pop alist)))
396 (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
397 (goto-char (point-min))
398 ;; Remove blank lines.
399 (while (eq (following-char) ?\n)
401 (when (numberp (setq result (funcall (intern
402 (format "nndoc-%s-type-p"
404 (push (cons result entry) results)
406 (unless (or result results)
407 (error "Document is not of any recognized type"))
410 (cadar (last (sort results 'car-less-than-car))))))
413 ;;; Built-in type predicates and functions
416 (defun nndoc-mbox-type-p ()
417 (when (looking-at message-unix-mail-delimiter)
420 (defun nndoc-mbox-article-begin ()
421 (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
422 (goto-char (match-beginning 0))))
424 (defun nndoc-mbox-body-end ()
429 (and (re-search-backward
430 (concat "^" message-unix-mail-delimiter) nil t)
432 (search-forward "\n\n" beg t)
434 "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
435 (setq len (string-to-number (match-string 1)))
436 (search-forward "\n\n" beg t)
437 (unless (= (setq len (+ (point) len)) (point-max))
438 (and (< len (point-max))
440 (looking-at message-unix-mail-delimiter)))))
443 (defun nndoc-mmdf-type-p ()
444 (when (looking-at "\^A\^A\^A\^A$")
447 (defun nndoc-news-type-p ()
448 (when (looking-at "^Path:.*\n")
451 (defun nndoc-rnews-type-p ()
452 (when (looking-at "#! *rnews")
455 (defun nndoc-rnews-body-end ()
456 (and (re-search-backward nndoc-article-begin nil t)
458 (goto-char (+ (point) (string-to-number (match-string 1))))))
460 (defun nndoc-google-type-p ()
461 (when (re-search-forward "^=3D=3D 1 of [0-9]+ =3D=3D$" nil t)
464 (defun nndoc-decode-content-transfer-encoding ()
467 (message-narrow-to-head)
468 (message-fetch-field "content-transfer-encoding"))))
470 (search-forward "\n\n" nil t))
472 (narrow-to-region (point) (point-max))
473 (mm-decode-content-transfer-encoding
474 (intern (downcase (mail-header-strip encoding))))))))
476 (defun nndoc-babyl-type-p ()
477 (when (re-search-forward "\^_\^L *\n" nil t)
480 (defun nndoc-babyl-body-begin ()
481 (re-search-forward "^\n" nil t)
482 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
483 (let ((next (or (save-excursion
484 (re-search-forward nndoc-article-begin nil t))
486 (unless (re-search-forward "^\n" next t)
490 (forward-line -1)))))
492 (defun nndoc-babyl-head-begin ()
493 (when (re-search-forward "^[0-9].*\n" nil t)
494 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
498 (defun nndoc-forward-type-p ()
499 (when (and (re-search-forward "^-+ \\(Start of \\)?forwarded message.*\n+"
501 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:\\|^>?From "))
504 (defun nndoc-rfc934-type-p ()
505 (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
506 (not (re-search-forward "^Subject:.*digest" nil t))
507 (not (re-search-backward "^From:" nil t 2))
508 (not (re-search-forward "^From:" nil t 2)))
511 (defun nndoc-mailman-type-p ()
512 (when (re-search-forward "^--__--__--\n+" nil t)
515 (defun nndoc-rfc822-forward-type-p ()
517 (message-narrow-to-head)
518 (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
521 (defun nndoc-rfc822-forward-body-end-function ()
522 (goto-char (point-max)))
524 (defun nndoc-rfc822-forward-generate-article (article &optional head)
525 (let ((entry (cdr (assq article nndoc-dissection-alist)))
528 (with-current-buffer nndoc-current-buffer
530 (message-narrow-to-head)
531 (setq encoding (message-fetch-field "content-transfer-encoding"))))
532 (insert-buffer-substring nndoc-current-buffer (car entry) (nth 3 entry))
535 (narrow-to-region begin (point-max))
536 (mm-decode-content-transfer-encoding
537 (intern (downcase (mail-header-strip encoding))))))
540 (when (search-forward "\n\n" nil t)
541 (delete-region (1- (point)) (point-max)))))
544 (defun nndoc-rfc822-forward-generate-head (article)
545 (nndoc-rfc822-forward-generate-article article 'head))
547 (defun nndoc-mime-parts-type-p ()
548 (let ((case-fold-search t)
549 (limit (search-forward "\n\n" nil t)))
550 (goto-char (point-min))
554 ^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
555 "\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
559 (defun nndoc-transform-mime-parts (article)
560 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
561 (headers (nth 5 entry)))
563 (goto-char (point-min))
566 (defun nndoc-generate-mime-parts-head (article)
567 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
568 (headers (nth 6 entry)))
570 (narrow-to-region (point) (point))
571 (insert-buffer-substring
572 nndoc-current-buffer (car entry) (nth 1 entry))
573 (goto-char (point-max)))
577 (defun nndoc-clari-briefs-type-p ()
578 (when (let ((case-fold-search nil))
579 (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
582 (defun nndoc-transform-clari-briefs (article)
583 (goto-char (point-min))
584 (when (looking-at " *\\*\\(.*\\)\n")
585 (replace-match "" t t))
586 (nndoc-generate-clari-briefs-head article))
588 (defun nndoc-generate-clari-briefs-head (article)
589 (let ((entry (cdr (assq article nndoc-dissection-alist)))
592 (set-buffer nndoc-current-buffer)
594 (narrow-to-region (car entry) (nth 3 entry))
595 (goto-char (point-min))
596 (when (looking-at " *\\*\\(.*\\)$")
597 (setq subject (match-string 1))
598 (when (string-match "[ \t]+$" subject)
599 (setq subject (substring subject 0 (match-beginning 0)))))
601 (let ((case-fold-search nil))
603 "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
604 (setq from (match-string 1)))))
605 (insert "From: " "clari@clari.net (" (or from "unknown") ")"
606 "\nSubject: " (or subject "(no subject)") "\n")))
608 (defun nndoc-exim-bounce-type-p ()
609 (and (re-search-forward "^------ This is a copy of the message, including all the headers. ------" nil t)
612 (defun nndoc-exim-bounce-body-end-function ()
613 (goto-char (point-max)))
616 (defun nndoc-mime-digest-type-p ()
617 (let ((case-fold-search t)
618 boundary-id b-delimiter entry)
621 (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
622 "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
625 (setq boundary-id (match-string 1)
626 b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
627 (setq entry (assq 'mime-digest nndoc-type-alist))
630 (cons 'head-begin "^ ?\n")
631 (cons 'head-end "^ ?$")
632 (cons 'body-begin "^ ?\n")
633 (cons 'article-begin b-delimiter)
634 (cons 'body-end-function 'nndoc-digest-body-end)
635 (cons 'file-end (concat "^--" boundary-id "--[ \t]*$"))))
638 (defun nndoc-standard-digest-type-p ()
639 (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
641 (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
644 (defun nndoc-digest-body-end ()
645 (and (re-search-forward nndoc-article-begin nil t)
646 (goto-char (match-beginning 0))))
648 (defun nndoc-slack-digest-type-p ()
651 (defun nndoc-lanl-gov-announce-type-p ()
652 (when (let ((case-fold-search nil))
653 (re-search-forward "^\\\\\\\\\n\\(Paper\\( (\\*cross-listing\\*)\\)?: [a-zA-Z-\\.]+/[0-9]+\\|arXiv:\\)" nil t))
656 (defun nndoc-transform-lanl-gov-announce (article)
657 (let ((case-fold-search nil))
658 (goto-char (point-max))
659 (when (re-search-backward "^\\\\\\\\ +( *\\([^ ]*\\) , *\\([^ ]*\\))" nil t)
660 (replace-match "\n\nGet it at \\1 (\\2)" t nil))
661 (goto-char (point-min))
662 (while (re-search-forward "^\\\\\\\\$" nil t)
663 (replace-match "" t nil))
664 (goto-char (point-min))
665 (when (re-search-forward "^replaced with revised version +\\(.*[^ ]\\) +" nil t)
666 (replace-match "Date: \\1 (revised) " t nil))
667 (goto-char (point-min))
668 (unless (re-search-forward "^From" nil t)
669 (goto-char (point-min))
670 (when (re-search-forward "^Authors?: \\(.*\\)" nil t)
671 (goto-char (point-min))
672 (insert "From: " (match-string 1) "\n")))
673 (when (re-search-forward "^arXiv:" nil t)
674 (replace-match "Paper: arXiv:" t nil))))
676 (defun nndoc-generate-lanl-gov-head (article)
677 (let ((entry (cdr (assq article nndoc-dissection-alist)))
678 (from "<no address given>")
681 (set-buffer nndoc-current-buffer)
683 (narrow-to-region (car entry) (nth 1 entry))
684 (goto-char (point-min))
685 (when (looking-at "^\\(Paper.*: \\|arXiv:\\)\\([0-9a-zA-Z-\\./]+\\)")
686 (setq subject (concat " (" (match-string 2) ")"))
687 (when (re-search-forward "^From: \\(.*\\)" nil t)
688 (setq from (concat "<"
689 (cadr (funcall gnus-extract-address-components
690 (match-string 1))) ">")))
691 (if (re-search-forward "^Date: +\\([^(]*\\)" nil t)
692 (setq date (match-string 1))
693 (when (re-search-forward "^replaced with revised version +\\([^(]*\\)" nil t)
694 (setq date (match-string 1))))
695 (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
697 (setq subject (concat (match-string 1) subject))
698 (setq from (concat (match-string 2) " " from))))))
699 (while (and from (string-match "(\[^)\]*)" from))
700 (setq from (replace-match "" t t from)))
701 (insert "From: " (or from "unknown")
702 "\nSubject: " (or subject "(no subject)") "\n")
703 (if date (insert "Date: " date))))
705 (defun nndoc-nsmail-type-p ()
706 (when (looking-at "From - ")
709 (defun nndoc-outlook-article-begin ()
710 (prog1 (re-search-forward "From:\\|Received:" nil t)
711 (goto-char (match-beginning 0))))
713 (defun nndoc-outlook-type-p ()
714 ;; FIXME: Is JMF the magic of outlook mailbox? -- ShengHuo.
717 (defun nndoc-oe-dbx-type-p ()
718 (looking-at (mm-string-to-multibyte "\317\255\022\376")))
720 (defun nndoc-read-little-endian ()
721 (+ (prog1 (char-after) (forward-char 1))
722 (lsh (prog1 (char-after) (forward-char 1)) 8)
723 (lsh (prog1 (char-after) (forward-char 1)) 16)
724 (lsh (prog1 (char-after) (forward-char 1)) 24)))
726 (defun nndoc-oe-dbx-decode-block ()
728 (nndoc-read-little-endian) ;; this address
729 (nndoc-read-little-endian) ;; next address offset
730 (nndoc-read-little-endian) ;; blocksize
731 (nndoc-read-little-endian))) ;; next address
733 (defun nndoc-oe-dbx-dissection ()
734 (let ((i 0) blk p tp)
735 (goto-char 60117) ;; 0x0000EAD4+1
738 (setq blk (nndoc-oe-dbx-decode-block)))
739 (while (and blk (> (car blk) 0) (or (zerop (nth 3 blk))
741 (push (list (incf i) p nil nil nil 0) nndoc-dissection-alist)
742 (while (and (> (car blk) 0) (> (nth 3 blk) p))
743 (goto-char (1+ (nth 3 blk)))
744 (setq blk (nndoc-oe-dbx-decode-block)))
745 (if (or (<= (car blk) p)
747 (not (zerop (nth 3 blk))))
749 (setq tp (+ (car blk) (nth 1 blk) 17))
750 (if (or (<= tp p) (>= tp (point-max)))
754 blk (nndoc-oe-dbx-decode-block)))))))
756 (defun nndoc-oe-dbx-generate-article (article &optional head)
757 (let ((entry (cdr (assq article nndoc-dissection-alist)))
758 (cur (current-buffer))
761 (with-current-buffer nndoc-current-buffer
763 (while (> p (point-min))
765 (setq blk (nndoc-oe-dbx-decode-block))
767 (with-current-buffer cur
768 (insert-buffer-substring nndoc-current-buffer p (+ p (nth 2 blk))))
769 (setq p (1+ (nth 3 blk)))))
771 (while (re-search-forward "\r$" nil t)
775 (when (search-forward "\n\n" nil t)
776 (setcar (cddddr entry) (count-lines (point) (point-max)))
777 (delete-region (1- (point)) (point-max))))
780 (defun nndoc-oe-dbx-generate-head (article)
781 (nndoc-oe-dbx-generate-article article 'head))
783 (defun nndoc-mail-in-mail-type-p ()
787 (while (re-search-forward "\n\n[-A-Za-z0-9]+:" nil t)
790 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
791 (if (looking-at "[-A-Za-z0-9]+:")
792 (setq found (1+ found)))
794 (if (and (> found 0) (looking-at "\n"))
798 (defun nndoc-mail-in-mail-article-begin ()
801 (while (re-search-forward "\n\n\\([-A-Za-z0-9]+:\\)" nil t)
803 (setq point (match-beginning 1))
805 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
806 (if (looking-at "[-A-Za-z0-9]+:")
807 (setq found (1+ found)))
809 (if (and (> found 0) (looking-at "\n"))
814 (deffoo nndoc-request-accept-article (group &optional server last)
818 ;;; Functions for dissecting the documents
821 (defun nndoc-search (regexp)
823 (re-search-forward regexp nil t)
824 (beginning-of-line)))
826 (defun nndoc-dissect-buffer ()
827 "Go through the document and partition it into heads/bodies/articles."
830 art-begin head-begin head-end body-begin body-end)
831 (setq nndoc-dissection-alist nil)
833 (set-buffer nndoc-current-buffer)
834 (goto-char (point-min))
835 ;; Remove blank lines.
836 (while (eq (following-char) ?\n)
838 (when nndoc-pre-dissection-function
840 (funcall nndoc-pre-dissection-function)))
841 (if nndoc-dissection-function
842 (funcall nndoc-dissection-function)
843 ;; Find the beginning of the file.
844 (when nndoc-file-begin
845 (nndoc-search nndoc-file-begin))
846 ;; Go through the file.
847 (while (if (and first nndoc-first-article)
848 (nndoc-search nndoc-first-article)
850 (goto-char art-begin)
851 (nndoc-article-begin)))
854 (cond (nndoc-head-begin-function
855 (funcall nndoc-head-begin-function))
857 (nndoc-search nndoc-head-begin)))
860 (looking-at nndoc-file-end)))
861 (goto-char (point-max))
862 (setq head-begin (point))
863 (nndoc-search (or nndoc-head-end "^$"))
864 (setq head-end (point))
865 (if nndoc-body-begin-function
866 (funcall nndoc-body-begin-function)
867 (nndoc-search (or nndoc-body-begin "^\n")))
868 (setq body-begin (point))
869 (or (and nndoc-body-end-function
870 (funcall nndoc-body-end-function))
872 (nndoc-search nndoc-body-end))
873 (and (nndoc-article-begin)
874 (setq art-begin (point)))
876 (goto-char (point-max))
878 (and (re-search-backward nndoc-file-end nil t)
879 (beginning-of-line)))))
880 (setq body-end (point))
881 (push (list (incf i) head-begin head-end body-begin body-end
882 (count-lines body-begin body-end))
883 nndoc-dissection-alist)))))))
885 (defun nndoc-article-begin ()
886 (if nndoc-article-begin-function
887 (funcall nndoc-article-begin-function)
889 (nndoc-search nndoc-article-begin))))
891 (defun nndoc-unquote-dashes ()
892 "Unquote quoted non-separators in digests."
893 (while (re-search-forward "^- -"nil t)
894 (replace-match "-" t t)))
896 ;; Against compiler warnings.
897 (defvar nndoc-mime-split-ordinal)
899 (defun nndoc-dissect-mime-parts ()
900 "Go through a MIME composite article and partition it into sub-articles.
901 When a MIME entity contains sub-entities, dissection produces one article for
902 the header of this entity, and one article per sub-entity."
903 (setq nndoc-dissection-alist nil
904 nndoc-mime-split-ordinal 0)
906 (set-buffer nndoc-current-buffer)
907 (nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
909 (defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
911 "Dissect an entity, within a composite MIME message.
912 The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
913 ARTICLE-INSERT should be added at beginning for generating a full article.
914 The string POSITION holds a dotted decimal representation of the article
915 position in the hierarchical structure, it is nil for the outer entity.
916 PARENT is the message-ID of the parent summary line, or nil for none."
917 (let ((case-fold-search t)
918 (message-id (nnmail-message-id))
919 head-end body-begin summary-insert message-rfc822 multipart-any
920 subject content-type type subtype boundary-regexp)
921 ;; Gracefully handle a missing body.
922 (goto-char head-begin)
923 (if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
924 (search-forward "\n\n" body-end t))
925 (setq head-end (1- (point))
927 (setq head-end body-end
928 body-begin body-end))
929 (narrow-to-region head-begin head-end)
930 ;; Save MIME attributes.
931 (goto-char head-begin)
932 (setq content-type (message-fetch-field "Content-Type"))
935 "^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
936 (setq type (downcase (match-string 1 content-type))
937 subtype (downcase (match-string 2 content-type))
938 message-rfc822 (and (string= type "message")
939 (string= subtype "rfc822"))
940 multipart-any (string= type "multipart")))
941 (when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
942 (setq subject (match-string 1 content-type)))
943 (when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
944 (setq boundary-regexp (concat "^--"
946 (match-string 1 content-type))
947 "\\(--\\)?[ \t]*\n"))))
949 (when (or multipart-any (not article-insert))
950 (setq subject (message-fetch-field "Subject"))))
954 ;; Prepare the article and summary inserts.
955 (unless article-insert
956 (setq article-insert (buffer-string)
957 head-end head-begin))
959 (unless (string-match "MIME-Version:" article-insert)
961 (concat article-insert "MIME-Version: 1.0\n")))
962 (setq summary-insert article-insert)
963 ;; - summary Subject.
965 (let ((line (concat "Subject: <" position
966 (and position multipart-any ".")
967 (and multipart-any "*")
968 (and (or position multipart-any) " ")
969 (cond ((string= subtype "plain") type)
970 ((string= subtype "basic") type)
976 (if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
977 (replace-match line t t summary-insert)
978 (concat summary-insert line))))
979 ;; - summary Message-ID.
981 (let ((line (concat "Message-ID: " message-id "\n")))
982 (if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
983 (replace-match line t t summary-insert)
984 (concat summary-insert line))))
985 ;; - summary References.
988 (let ((line (concat "References: " parent "\n")))
989 (if (string-match "References:.*\n\\([ \t].*\n\\)*"
991 (replace-match line t t summary-insert)
992 (concat summary-insert line)))))
993 ;; Generate dissection information for this entity.
994 (push (list (incf nndoc-mime-split-ordinal)
995 head-begin head-end body-begin body-end
996 (count-lines body-begin body-end)
997 article-insert summary-insert)
998 nndoc-dissection-alist)
999 ;; Recurse for all sub-entities, if any.
1004 (nndoc-dissect-mime-parts-sub body-begin body-end nil
1005 position message-id)))
1006 ((and multipart-any boundary-regexp)
1007 (let ((part-counter 0)
1008 part-begin part-end eof-flag)
1009 (while (string-match "\
1010 ^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
1012 (setq article-insert (replace-match "" t t article-insert)))
1013 (let ((case-fold-search nil))
1014 (goto-char body-begin)
1015 (setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
1016 (while (not eof-flag)
1017 (setq part-begin (point))
1018 (cond ((re-search-forward boundary-regexp body-end t)
1019 (or (not (match-string 1))
1020 (string= (match-string 1) "")
1023 (setq part-end (point))
1025 (t (setq part-end body-end
1028 (nndoc-dissect-mime-parts-sub
1029 part-begin part-end article-insert
1032 (format "%d" (incf part-counter)))
1036 (defun nndoc-add-type (definition &optional position)
1037 "Add document DEFINITION to the list of nndoc document definitions.
1038 If POSITION is nil or `last', the definition will be added
1039 as the last checked definition, if t or `first', add as the
1040 first definition, and if any other symbol, add after that
1041 symbol in the alist."
1042 ;; First remove any old instances.
1043 (gnus-pull (car definition) nndoc-type-alist)
1044 ;; Then enter the new definition in the proper place.
1046 ((or (null position) (eq position 'last))
1047 (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
1048 ((or (eq position t) (eq position 'first))
1049 (push definition nndoc-type-alist))
1051 (let ((list (memq (assq position nndoc-type-alist)
1054 (error "No such position: %s" position))
1055 (setcdr list (cons definition (cdr list)))))))
1059 ;;; nndoc.el ends here